This is one of those, I knew it at one point but its been so long ago items. Also, the manner in which it was discovered had us scratching our heads for a minute. I try not to blog about work specific items, you never know who is watching out there and i'm sure we have all heard of bloggers who have been fired. Playing it safe, lets just say, someone made a boo boo.....
So just a reminder that when a database is opened with resetlogs your creating a new incarnation of the database. If your using an rman catalog, you will have to login to your catalog and execute register database. Otherwise you will get an error:
Recovery Manager: Release 126.96.36.199.0 - Production
Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.
connected to target database: MYDB (DBID=2508956331)
connected to recovery catalog database
RMAN> 2> 3> 4> 5> 6>
Starting backup at 11-JUL-07
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-03002: failure of backup command at 07/11/2007 03:30:00
RMAN-06004: ORACLE error from recovery catalog database: RMAN-20003: target database incarnation not found in recovery catalog